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/* Copyright 2019 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "adc.h"
#include "adc_chip.h"
#include "gpio.h"
#include "hooks.h"
#include "registers.h"
#include "timer.h"
#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
void board_reset_pd_mcu(void)
{
}
void board_config_pre_init(void)
{
STM32_RCC_AHBENR |= STM32_RCC_HB_DMA1;
/*
* Remap USART1 and SPI2 DMA:
*
* Ch4: USART1_TX / Ch5: USART1_RX (1000)
* Ch6: SPI2_RX / Ch7: SPI2_TX (0011)
*/
STM32_DMA_CSELR(STM32_DMAC_CH4) = (8 << 12) | (8 << 16) |
(3 << 20) | (3 << 24);
}
enum kukui_board_version {
BOARD_VERSION_UNKNOWN = -1,
BOARD_VERSION_REV0 = 0,
BOARD_VERSION_REV1 = 1,
BOARD_VERSION_REV2 = 2,
BOARD_VERSION_REV3 = 3,
BOARD_VERSION_REV4 = 4,
BOARD_VERSION_REV5 = 5,
BOARD_VERSION_REV6 = 6,
BOARD_VERSION_REV7 = 7,
BOARD_VERSION_REV8 = 8,
BOARD_VERSION_REV9 = 9,
BOARD_VERSION_REV10 = 10,
BOARD_VERSION_REV11 = 11,
BOARD_VERSION_REV12 = 12,
BOARD_VERSION_REV13 = 13,
BOARD_VERSION_REV14 = 14,
BOARD_VERSION_REV15 = 15,
BOARD_VERSION_COUNT,
};
/* map from kukui_board_version to board id voltage in mv */
const int16_t kukui_board_id_map[] = {
109, /* 51.1K , 2.2K(gru 3.3K) ohm */
211, /* 51.1k , 6.8K ohm */
319, /* 51.1K , 11K ohm */
427, /* 56K , 17.4K ohm */
542, /* 51.1K , 22K ohm */
666, /* 51.1K , 30K ohm */
781, /* 51.1K , 39.2K ohm */
900, /* 56K , 56K ohm */
1023, /* 47K , 61.9K ohm */
1137, /* 47K , 80.6K ohm */
1240, /* 56K , 124K ohm */
1343, /* 51.1K , 150K ohm */
1457, /* 47K , 200K ohm */
1576, /* 47K , 330K ohm */
1684, /* 47K , 680K ohm */
1800, /* 56K , NC */
};
BUILD_ASSERT(ARRAY_SIZE(kukui_board_id_map) == BOARD_VERSION_COUNT);
#define THRESHOLD_MV 56 /* Simply assume 1800/16/2 */
int board_get_version(void)
{
static int version = BOARD_VERSION_UNKNOWN;
int mv;
int i;
if (version != BOARD_VERSION_UNKNOWN)
return version;
gpio_set_level(GPIO_EC_BOARD_ID_EN_L, 0);
/* Wait to allow cap charge */
msleep(10);
mv = adc_read_channel(ADC_BOARD_ID);
if (mv == ADC_READ_ERROR)
mv = adc_read_channel(ADC_BOARD_ID);
gpio_set_level(GPIO_EC_BOARD_ID_EN_L, 1);
for (i = 0; i < BOARD_VERSION_COUNT; ++i) {
if (mv < kukui_board_id_map[i] + THRESHOLD_MV) {
version = i;
break;
}
}
/*
* For devices without pogo, Disable ADC module after we detect the
* board version, since this is the only thing ADC module needs to do
* for this board.
*/
if (CONFIG_DEDICATED_CHARGE_PORT_COUNT == 0 &&
version != BOARD_VERSION_UNKNOWN)
adc_disable();
return version;
}
static void baseboard_spi_init(void)
{
/* Set SPI PA15,PB3/4/5/13/14/15 pins to high speed */
STM32_GPIO_OSPEEDR(GPIO_A) |= 0xc0000000;
STM32_GPIO_OSPEEDR(GPIO_B) |= 0xfc000fc0;
}
DECLARE_HOOK(HOOK_INIT, baseboard_spi_init, HOOK_PRIO_INIT_SPI + 1);
int board_allow_i2c_passthru(int port)
{
return (port == I2C_PORT_VIRTUAL_BATTERY);
}
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